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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <limits.h>
#include <o3tl/float_int_conversion.hxx>
#include <tools/time.hxx>
#include <bitmaps.hlst>
#include <svdata.hxx>
#include <scrwnd.hxx>
#include <vcl/timer.hxx>
#include <vcl/commandevent.hxx>
#include <vcl/event.hxx>
#include <vcl/ptrstyle.hxx>
#include <sal/log.hxx>
#include <math.h>
#define WHEEL_WIDTH 25
#define WHEEL_RADIUS ((WHEEL_WIDTH) >> 1 )
#define MAX_TIME 300
#define MIN_TIME 20
#define DEF_TIMEOUT 50
ImplWheelWindow::ImplWheelWindow( vcl::Window* pParent ) :
FloatingWindow ( pParent, 0 ),
mnRepaintTime ( 1 ),
mnTimeout ( DEF_TIMEOUT ),
mnWheelMode ( WheelMode::NONE ),
mnActDist ( 0 ),
mnActDeltaX ( 0 ),
mnActDeltaY ( 0 )
{
// we need a parent
SAL_WARN_IF( !pParent, "vcl", "ImplWheelWindow::ImplWheelWindow(): Parent not set!" );
const Size aSize( pParent->GetOutputSizePixel() );
const StartAutoScrollFlags nFlags = ImplGetSVData()->maWinData.mnAutoScrollFlags;
const bool bHorz( nFlags & StartAutoScrollFlags::Horz );
const bool bVert( nFlags & StartAutoScrollFlags::Vert );
// calculate maximum speed distance
mnMaxWidth = static_cast<sal_uLong>( 0.4 * hypot( static_cast<double>(aSize.Width()), aSize.Height() ) );
// create wheel window
SetTitleType( FloatWinTitleType::NONE );
ImplCreateImageList();
BitmapEx aBmp(SV_RESID_BITMAP_SCROLLMSK);
ImplSetRegion(aBmp.GetBitmap());
// set wheel mode
if( bHorz && bVert )
ImplSetWheelMode( WheelMode::VH );
else if( bHorz )
ImplSetWheelMode( WheelMode::H );
else
ImplSetWheelMode( WheelMode::V );
// init timer
mpTimer.reset(new Timer("WheelWindowTimer"));
mpTimer->SetInvokeHandler( LINK( this, ImplWheelWindow, ImplScrollHdl ) );
mpTimer->SetTimeout( mnTimeout );
mpTimer->Start();
CaptureMouse();
}
ImplWheelWindow::~ImplWheelWindow()
{
disposeOnce();
}
void ImplWheelWindow::dispose()
{
ImplStop();
mpTimer.reset();
FloatingWindow::dispose();
}
void ImplWheelWindow::ImplStop()
{
ReleaseMouse();
mpTimer->Stop();
Show(false);
}
void ImplWheelWindow::ImplSetRegion( const Bitmap& rRegionBmp )
{
Point aPos( GetPointerPosPixel() );
const Size aSize( rRegionBmp.GetSizePixel() );
const tools::Rectangle aRect( Point(), aSize );
maCenter = maLastMousePos = aPos;
aPos.AdjustX( -(aSize.Width() >> 1) );
aPos.AdjustY( -(aSize.Height() >> 1) );
SetPosSizePixel( aPos, aSize );
SetWindowRegionPixel( rRegionBmp.CreateRegion( COL_BLACK, aRect ) );
}
void ImplWheelWindow::ImplCreateImageList()
{
maImgList.emplace_back(Image(StockImage::Yes, SV_RESID_BITMAP_SCROLLVH));
maImgList.emplace_back(Image(StockImage::Yes, SV_RESID_BITMAP_SCROLLV));
maImgList.emplace_back(Image(StockImage::Yes, SV_RESID_BITMAP_SCROLLH));
maImgList.emplace_back(Image(StockImage::Yes, SV_RESID_BITMAP_WHEELVH));
maImgList.emplace_back(Image(StockImage::Yes, SV_RESID_BITMAP_WHEELV));
maImgList.emplace_back(Image(StockImage::Yes, SV_RESID_BITMAP_WHEELH));
}
void ImplWheelWindow::ImplSetWheelMode( WheelMode nWheelMode )
{
if( nWheelMode != mnWheelMode )
{
mnWheelMode = nWheelMode;
if( WheelMode::NONE == mnWheelMode )
{
if( IsVisible() )
Hide();
}
else
{
if( !IsVisible() )
Show();
Invalidate();
}
}
}
void ImplWheelWindow::ImplDrawWheel(vcl::RenderContext& rRenderContext)
{
int nIndex;
switch (mnWheelMode)
{
case WheelMode::VH:
nIndex = 0;
break;
case WheelMode::V:
nIndex = 1;
break;
case WheelMode::H:
nIndex = 2;
break;
case WheelMode::ScrollVH:
nIndex = 3;
break;
case WheelMode::ScrollV:
nIndex = 4;
break;
case WheelMode::ScrollH:
nIndex = 5;
break;
default:
nIndex = -1;
break;
}
if (nIndex >= 0)
rRenderContext.DrawImage(Point(), maImgList[nIndex]);
}
void ImplWheelWindow::ImplRecalcScrollValues()
{
if( mnActDist < WHEEL_RADIUS )
{
mnActDeltaX = mnActDeltaY = 0;
mnTimeout = DEF_TIMEOUT;
}
else
{
sal_uInt64 nCurTime;
// calc current time
if( mnMaxWidth )
{
const double fExp = ( static_cast<double>(mnActDist) / mnMaxWidth ) * log10( double(MAX_TIME) / MIN_TIME );
nCurTime = static_cast<sal_uInt64>( MAX_TIME / pow( 10., fExp ) );
}
else
nCurTime = MAX_TIME;
if( !nCurTime )
nCurTime = 1;
if( mnRepaintTime <= nCurTime )
mnTimeout = nCurTime - mnRepaintTime;
else
{
sal_uInt64 nMult = mnRepaintTime / nCurTime;
if( !( mnRepaintTime % nCurTime ) )
mnTimeout = 0;
else
mnTimeout = ++nMult * nCurTime - mnRepaintTime;
double fValX = static_cast<double>(mnActDeltaX) * nMult;
double fValY = static_cast<double>(mnActDeltaY) * nMult;
if( !o3tl::convertsToAtMost(fValX, LONG_MAX) )
mnActDeltaX = LONG_MAX;
else if( !o3tl::convertsToAtLeast(fValX, LONG_MIN) )
mnActDeltaX = LONG_MIN;
else
mnActDeltaX = static_cast<long>(fValX);
if( !o3tl::convertsToAtMost(fValY, LONG_MAX) )
mnActDeltaY = LONG_MAX;
else if( !o3tl::convertsToAtLeast(fValY, LONG_MIN) )
mnActDeltaY = LONG_MIN;
else
mnActDeltaY = static_cast<long>(fValY);
}
}
}
PointerStyle ImplWheelWindow::ImplGetMousePointer( long nDistX, long nDistY )
{
PointerStyle eStyle;
const StartAutoScrollFlags nFlags = ImplGetSVData()->maWinData.mnAutoScrollFlags;
const bool bHorz( nFlags & StartAutoScrollFlags::Horz );
const bool bVert( nFlags & StartAutoScrollFlags::Vert );
if( bHorz || bVert )
{
if( mnActDist < WHEEL_RADIUS )
{
if( bHorz && bVert )
eStyle = PointerStyle::AutoScrollNSWE;
else if( bHorz )
eStyle = PointerStyle::AutoScrollWE;
else
eStyle = PointerStyle::AutoScrollNS;
}
else
{
double fAngle = basegfx::rad2deg(atan2(static_cast<double>(-nDistY), nDistX));
if( fAngle < 0.0 )
fAngle += 360.;
if( bHorz && bVert )
{
if( fAngle >= 22.5 && fAngle <= 67.5 )
eStyle = PointerStyle::AutoScrollNE;
else if( fAngle >= 67.5 && fAngle <= 112.5 )
eStyle = PointerStyle::AutoScrollN;
else if( fAngle >= 112.5 && fAngle <= 157.5 )
eStyle = PointerStyle::AutoScrollNW;
else if( fAngle >= 157.5 && fAngle <= 202.5 )
eStyle = PointerStyle::AutoScrollW;
else if( fAngle >= 202.5 && fAngle <= 247.5 )
eStyle = PointerStyle::AutoScrollSW;
else if( fAngle >= 247.5 && fAngle <= 292.5 )
eStyle = PointerStyle::AutoScrollS;
else if( fAngle >= 292.5 && fAngle <= 337.5 )
eStyle = PointerStyle::AutoScrollSE;
else
eStyle = PointerStyle::AutoScrollE;
}
else if( bHorz )
{
if( fAngle >= 270. || fAngle <= 90. )
eStyle = PointerStyle::AutoScrollE;
else
eStyle = PointerStyle::AutoScrollW;
}
else
{
if( fAngle >= 0. && fAngle <= 180. )
eStyle = PointerStyle::AutoScrollN;
else
eStyle = PointerStyle::AutoScrollS;
}
}
}
else
eStyle = PointerStyle::Arrow;
return eStyle;
}
void ImplWheelWindow::Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle&)
{
ImplDrawWheel(rRenderContext);
}
void ImplWheelWindow::MouseMove( const MouseEvent& rMEvt )
{
FloatingWindow::MouseMove( rMEvt );
const Point aMousePos( OutputToScreenPixel( rMEvt.GetPosPixel() ) );
const long nDistX = aMousePos.X() - maCenter.X();
const long nDistY = aMousePos.Y() - maCenter.Y();
mnActDist = static_cast<sal_uLong>(hypot( static_cast<double>(nDistX), nDistY ));
const PointerStyle eActStyle = ImplGetMousePointer( nDistX, nDistY );
const StartAutoScrollFlags nFlags = ImplGetSVData()->maWinData.mnAutoScrollFlags;
const bool bHorz( nFlags & StartAutoScrollFlags::Horz );
const bool bVert( nFlags & StartAutoScrollFlags::Vert );
const bool bOuter = mnActDist > WHEEL_RADIUS;
if( bOuter && ( maLastMousePos != aMousePos ) )
{
switch( eActStyle )
{
case PointerStyle::AutoScrollN: mnActDeltaX = +0; mnActDeltaY = +1; break;
case PointerStyle::AutoScrollS: mnActDeltaX = +0; mnActDeltaY = -1; break;
case PointerStyle::AutoScrollW: mnActDeltaX = +1; mnActDeltaY = +0; break;
case PointerStyle::AutoScrollE: mnActDeltaX = -1; mnActDeltaY = +0; break;
case PointerStyle::AutoScrollNW: mnActDeltaX = +1; mnActDeltaY = +1; break;
case PointerStyle::AutoScrollNE: mnActDeltaX = -1; mnActDeltaY = +1; break;
case PointerStyle::AutoScrollSW: mnActDeltaX = +1; mnActDeltaY = -1; break;
case PointerStyle::AutoScrollSE: mnActDeltaX = -1; mnActDeltaY = -1; break;
default:
break;
}
}
ImplRecalcScrollValues();
maLastMousePos = aMousePos;
SetPointer( eActStyle );
if( bHorz && bVert )
ImplSetWheelMode( bOuter ? WheelMode::ScrollVH : WheelMode::VH );
else if( bHorz )
ImplSetWheelMode( bOuter ? WheelMode::ScrollH : WheelMode::H );
else
ImplSetWheelMode( bOuter ? WheelMode::ScrollV : WheelMode::V );
}
void ImplWheelWindow::MouseButtonUp( const MouseEvent& rMEvt )
{
if( mnActDist > WHEEL_RADIUS )
GetParent()->EndAutoScroll();
else
FloatingWindow::MouseButtonUp( rMEvt );
}
IMPL_LINK_NOARG(ImplWheelWindow, ImplScrollHdl, Timer *, void)
{
if ( mnActDeltaX || mnActDeltaY )
{
vcl::Window* pWindow = GetParent();
const Point aMousePos( pWindow->OutputToScreenPixel( pWindow->GetPointerPosPixel() ) );
Point aCmdMousePos( pWindow->ImplFrameToOutput( aMousePos ) );
CommandScrollData aScrollData( mnActDeltaX, mnActDeltaY );
CommandEvent aCEvt( aCmdMousePos, CommandEventId::AutoScroll, true, &aScrollData );
NotifyEvent aNCmdEvt( MouseNotifyEvent::COMMAND, pWindow, &aCEvt );
if ( !ImplCallPreNotify( aNCmdEvt ) )
{
const sal_uInt64 nTime = tools::Time::GetSystemTicks();
VclPtr<ImplWheelWindow> xWin(this);
pWindow->Command( aCEvt );
if( xWin->IsDisposed() )
return;
mnRepaintTime = std::max( tools::Time::GetSystemTicks() - nTime, sal_uInt64(1) );
ImplRecalcScrollValues();
}
}
if ( mnTimeout != mpTimer->GetTimeout() )
mpTimer->SetTimeout( mnTimeout );
mpTimer->Start();
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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